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SENSIRION SCD30 User Manual

SENSIRION SCD30
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www.sensirion.com Version 0.93 D1 December 2018 1/19
Interface Description Sensirion SCD30 Sensor Module
CO
2
, humidity, and temperature sensor
NDIR CO
2
sensor technology
Integrated temperature and humidity sensor
Best performance-to-price ratio
Dual-channel detection for superior stability
Small form factor: 35 mm x 23 mm x 7 mm
Accuracy CO
2
sensor: ± (30 ppm + 3%)
Fully calibrated with digital interface UART or I
2
C
Contents
1 Digital interface description
1.1 I2C Protocol
1.2 Modbus protocol
1.3 Sensor commands
1.4 Signal conversion to physical values
2 Important Notices
2.1 Warning, Personal Injury
2.2 ESD Precautions
2.3 Warranty

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SENSIRION SCD30 Specifications

General IconGeneral
BrandSENSIRION
ModelSCD30
CategoryAccessories
LanguageEnglish

Summary

Digital interface description

I2C Protocol

Details the I2C communication protocol, speed, and clock stretching.

Modbus protocol

Describes the Modbus protocol, baud rate, and function codes for the sensor.

Sensor commands

Lists all available commands for controlling and configuring the sensor.

Trigger continuous measurement

Command to start continuous measurement with optional pressure compensation.

Stop continuous measurement

Command to stop continuous measurement of the SCD30.

Set measurement interval

Sets the interval for continuous measurement mode.

Get data ready status

Checks if measurement data is available in the sensor's buffer.

(De-)Activate Automatic Self-Calibration (ASC)

Activates or deactivates continuous automatic self-calibration.

Set Temperature Offset

Sets temperature offset for compensation of thermal self-heating.

Altitude Compensation

Compensates for CO2 measurement deviations due to altitude.

Read firmware version

Command to retrieve the firmware version of the SCD30 module.

Soft reset

Resets the sensor to its state after power-up without removing power.

Signal conversion to physical values

Explains conversion of digital sensor readings to physical units.

Important Notices

Warning, Personal Injury

Safety warnings regarding product usage and potential injury.

ESD Precautions

Guidelines to prevent damage from electrostatic discharge.

Warranty

Details the product warranty terms and conditions.

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